20250907 baekjoon

code_study/Baekjoon/swift/2096.swift

@@ -0,0 +1,23 @@
+if let N = Int(readLine() ?? "") {
+    var maxSum: [Int] = [0,0,0]
+    var minSum: [Int] = [0,0,0]
+    for _ in 1...N {
+        if let input = readLine(),
+           let nums = input.split(separator: " ").compactMap({Int($0)}) as? [Int],
+           nums.count == 3
+        {
+            let a = nums[0]; let b = nums[1]; let c = nums[2]
+            let tempMax = maxSum; let tempMin = minSum
+
+            maxSum[0] = max(tempMax[0], tempMax[1]) + a
+            maxSum[1] = (tempMax.max() ?? 0) + b
+            maxSum[2] = max(tempMax[1], tempMax[2]) + c
+
+            minSum[0] = min(tempMin[0], tempMin[1]) + a
+            minSum[1] = (tempMin.min() ?? 0) + b
+            minSum[2] = min(tempMin[1], tempMin[2]) + c
+        }
+    }
+    
+    print(maxSum.max() ?? 0, minSum.min() ?? 0)
+}